Tocolytic
A medication used to suppress or inhibit uterine contractions, often administered before emergency cesarean delivery to improve fetal outcomes.
Full Definition
Tocolytics are pharmacological agents that suppress uterine smooth muscle contractions by interfering with the mechanisms that promote myometrial contractility. In obstetric anesthesia practice, tocolytics such as terbutaline or nifedipine may be administered during emergency situations to temporarily halt labor, allowing time for proper anesthetic preparation and potentially improving uteroplacental blood flow. Common tocolytics include beta-2 agonists (terbutaline), calcium channel blockers (nifedipine), and magnesium sulfate. Understanding tocolytic effects is important for anesthesiologists as these medications can interact with anesthetic agents and affect maternal hemodynamics.
Usage
Usage note: Distinguish clearly from uterotonics, which have the opposite effect.
In Context
- "Terbutaline was administered as a tocolytic to temporarily halt contractions before emergency cesarean section." — Emergency obstetric procedure
- "The anesthesiologist noted the patient's recent tocolytic therapy when planning the anesthetic approach." — Preoperative assessment